Results 161 to 170 of about 7,514 (193)

Optoacoustic imaging of blood vessels

SPIE Proceedings, 2007
Optoacoustic imaging, a novel noninvasive modality, combines the advantages of optical methods and the ultrasound technique. The optoacoustic technique is based on tissue irradiation with nanosecond laser pulses and detection of ultrasound waves generated due to thermo-elastic expansion.
I. Patrikeev, H.-P. Brecht, Y. Y. Petrov, I. Y. Petrova, D. S. Prough, R. O. Esenaliev   +5 more
openaire   +1 more source

Optoacoustic Breast Imaging: Imaging-Pathology Correlation of Optoacoustic Features in Benign and Malignant Breast Masses

American Journal of Roentgenology, 2018
Optoacoustic ultrasound breast imaging is a fused anatomic and functional modality that shows morphologic features, as well as hemoglobin amount and relative oxygenation within and around breast masses. The purpose of this study is to investigate the positive predictive value (PPV) of optoacoustic ultrasound features in benign and malignant masses.In ...
Reni, Butler, Philip T, Lavin, F Lee, Tucker, Lora D, Barke, Marcela, Böhm-Vélez, Stamatia, Destounis, Stephen R, Grobmyer, Janine, Katzen, Kenneth A, Kist, Erini V, Makariou, Kathy J, Schilling, Catherine A, Young, Basak E, Dogan, Erin I, Neuschler   +13 more
openaire   +2 more sources

Reconstruction techniques for optoacoustic imaging

SPIE Proceedings, 2001
Optoacoustics is a method to gain information from inside a tissue. This is done by irradiating a tissue with a short light pulse, which generates a pressure distribution inside the tissue that mirrors the absorber distribution. The pressure distribution measured on the tissue-surface allows, by applying a back-projection method, to calculate a ...
Martin Frenz, Kornel P. Koestli, Guenther Paltauf, Heinz Schmidt-Kloiber, Heinz P. Weber   +4 more
openaire   +1 more source

Dual-wavelength optoacoustic imaging

SPIE Proceedings, 2003
Spectral optoacoustic imaging provides information about functional tissue properties in addition to tissue structure. To acquire simultaneously images at two wavelengths a wavelength-multiplexing method is proposed that uses two outputs from a pump laser -- OPO (optical parametric oscillator) system.
openaire   +1 more source

Optoacoustic Imaging of Adult Zebrafish

Biomedical Optics and 3-D Imaging, 2010
Adult zebrafish is an important model organism not accessible by current optical imaging methods due to intense light scattering. Here selective-plane optoacoustic tomography yields high resolution whole-body reconstructions of the animal at late developmental stages.
Daniel Razansky, Martin Distel, Rui Ma, Reinhard Koster, Vasilis Ntziachristos   +4 more
openaire   +1 more source

Far-infrared optoacoustic material probing and imaging

Optics Letters, 1980
We report experiments in the far infrared on the use of the optoacoustic effect to probe solid materials. The results demonstrate the feasibility of optoacoustic imaging with 84.7-cm(-10 (118-microm) radiation.
S, Perkowitz, G, Busse
openaire   +2 more sources

Imaging with the optoacoustic effect

Optics & Laser Technology, 1980
Abstract Optoacoustic imaging is a new technique with unusual features. It allows not only optical imaging, but also imaging of thermal structures on and in the sample. With optical radiation, images are produced from sample depths exceeding the optical penetration depth by several orders of magnitude. The resolution of, at present, about 7μm reveals
openaire   +1 more source

Optimal statistical approach to optoacoustic image reconstruction

Applied Optics, 2000
An optimal statistical approach is applied to the task of image reconstruction in photoacoustics. The physical essence of the task is as follows: Pulse laser irradiation induces an ultrasound wave on the inhomogeneities inside the investigated volume. This acoustic wave is received by the set of receivers outside this volume.
openaire   +2 more sources

Emerging contrast agents for multispectral optoacoustic imaging and their biomedical applications

Chemical Society Reviews, 2021
Yinglong Wu, Fang Zeng, Yanli Zhao
exaly  

Molecular imaging in oncology: Current impact and future directions

Ca-A Cancer Journal for Clinicians, 2022
Steven P Rowe, Martin G Pomper
exaly